Ultrahigh-Sensitive Compression-Stress Sensor Using Integrated Stimuli-Responsive Materials.

Measurement of mechanical stresses, such as compression, shear, and tensile stresses, contributes toward achieving a safer and healthier life. In particular, the detection of weak compression stresses is required for healthcare monitoring and biomedical applications. Compression stresses in the order of 10 -10  Pa have been visualized and/or quantified using mechano-responsive materials in previous works.

Visualization and Quantification of Microwaves Using Thermoresponsive Color-Change Hydrogel.

Visualization and quantification of invisible lights, such as microwaves, are significant for their safe use. In general, a sensitizer material combined with a transistor is used as electronic devices for the measurement. Here, we developed a thermoresponsive color-change hydrogel of poly(-isopropylacrylamide) (PNIPAAm) cross-linked by a layered organic composite based on polydiacetylene (PDA) for visualization and colorimetric quantification of microwaves.

[Clinical usefulness of polyamino acid particle agglutination test for detection of anti-HTLV-I antibody].

A new artificial carrier particle agglutination test using polyamino acid (polyamino PA) was developed for anti HTLV-I assay. We carried out the comparative study on anti-HTLV-I among polyamino PA, gelatin PA, EIA and WB methods. All of 76 ATL, 20 HAM/TSP, 53 patients with uveitis and 50 HTLV-I carriers were seropositive and 50 HTLV-I non carriers were seronegative with four methods.

The study of HCV antibody and serologic tests for syphilis in Thai patients with gynecologic disorders.

Investigation for prevalence of antibodies to hepatitis C virus (HCV) and to Treponema pallidum was conducted in 883 females with gynecologic disorders who were admitted to the gynecological ward of the Department of Obstetrics and Gynecology, Siriraj Hospital during April to August 1991. The study population consisted of 678 patients with malignancies and 205 patients with benign diseases. Anti-HCV antibody was found in 3.